Warning: Permanently added '[localhost]:64667' (ECDSA) to the list of known hosts. 2022/10/06 11:27:56 fuzzer started 2022/10/06 11:27:56 dialing manager at localhost:37161 syzkaller login: [ 37.479200] cgroup: Unknown subsys name 'net' [ 37.571354] cgroup: Unknown subsys name 'rlimit' [ 47.109970] ================================================================== [ 47.110949] BUG: KASAN: use-after-free in __lock_acquire+0x42c9/0x5e70 [ 47.111805] Read of size 8 at addr ffff88800dde81c8 by task syz-executor/280 [ 47.116178] [ 47.116414] CPU: 1 PID: 280 Comm: syz-executor Not tainted 6.0.0-next-20221006 #1 [ 47.117390] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 47.118466] Call Trace: [ 47.118816] [ 47.119126] dump_stack_lvl+0x8b/0xb3 [ 47.119637] print_report+0x172/0x475 [ 47.120150] ? __lock_acquire+0x42c9/0x5e70 [ 47.120703] kasan_report+0xbb/0x1c0 [ 47.121195] ? __lock_acquire+0x42c9/0x5e70 [ 47.121747] __lock_acquire+0x42c9/0x5e70 [ 47.122282] ? lock_chain_count+0x20/0x20 [ 47.122824] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 47.123494] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 47.124154] ? finish_task_switch.isra.0+0x22d/0x8a0 [ 47.124792] lock_acquire+0x1a2/0x530 [ 47.125306] ? kmemleak_scan+0x21d/0x16d0 [ 47.125824] ? lock_release+0x750/0x750 [ 47.126329] ? mark_held_locks+0x9e/0xe0 [ 47.126857] ? call_rcu+0x589/0xa30 [ 47.127320] ? call_rcu+0x589/0xa30 [ 47.127790] ? _raw_spin_lock_irq+0x41/0x50 [ 47.128328] _raw_spin_lock_irq+0x32/0x50 [ 47.128850] ? kmemleak_scan+0x21d/0x16d0 [ 47.129374] kmemleak_scan+0x21d/0x16d0 [ 47.129876] ? paint_ptr+0xc0/0xc0 [ 47.130328] ? strncpy_from_user+0x204/0x3e0 [ 47.130895] kmemleak_write+0x570/0x680 [ 47.131397] ? kmemleak_scan+0x16d0/0x16d0 [ 47.131924] ? debugfs_file_get+0x1ce/0x450 [ 47.132464] ? debugfs_file_put+0xd0/0xd0 [ 47.132991] full_proxy_write+0x11d/0x190 [ 47.133534] vfs_write+0x2cb/0xd90 [ 47.134002] ? full_proxy_poll+0x180/0x180 [ 47.134529] ? kernel_write+0x630/0x630 [ 47.135041] ? do_sys_openat2+0xa1/0x4c0 [ 47.135555] ? build_open_flags+0x6f0/0x6f0 [ 47.136116] ? xfd_validate_state+0x59/0x180 [ 47.136682] ? __fget_light+0x212/0x280 [ 47.137201] ksys_write+0x127/0x250 [ 47.137672] ? __ia32_sys_read+0xb0/0xb0 [ 47.138214] ? syscall_enter_from_user_mode+0x1d/0x50 [ 47.138873] ? syscall_enter_from_user_mode+0x1d/0x50 [ 47.139521] do_syscall_64+0x3b/0x90 [ 47.139987] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 47.140628] RIP: 0033:0x7fd80081e5c3 [ 47.141103] Code: 16 00 00 00 eb ae 90 b8 6e 00 00 00 eb a6 e8 44 ef 04 00 0f 1f 40 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18 [ 47.143320] RSP: 002b:00007ffff3c249d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 47.144253] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fd80081e5c3 [ 47.145131] RDX: 0000000000000004 RSI: 00007ffff3c24a00 RDI: 0000000000000003 [ 47.146004] RBP: 0000000000000003 R08: 0000000000000000 R09: 00007ffff3c24950 [ 47.146872] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd8008c4e61 [ 47.147745] R13: 00007ffff3c24a00 R14: 0000000000000000 R15: 00007fd8009066c0 [ 47.148641] [ 47.148948] [ 47.149182] Allocated by task 129: [ 47.149624] kasan_save_stack+0x1e/0x40 [ 47.150129] kasan_set_track+0x21/0x30 [ 47.150625] __kasan_slab_alloc+0x58/0x70 [ 47.151143] kmem_cache_alloc+0x1a9/0x3e0 [ 47.151673] __create_object+0x3d/0xc10 [ 47.152168] kmem_cache_alloc+0x235/0x3e0 [ 47.152687] __alloc_file+0x21/0x240 [ 47.153186] alloc_empty_file+0x6d/0x170 [ 47.153712] alloc_file+0x59/0x800 [ 47.154169] alloc_file_pseudo+0x16a/0x250 [ 47.154707] sock_alloc_file+0x4f/0x1a0 [ 47.155209] __sys_socket+0x1a8/0x250 [ 47.155682] __x64_sys_socket+0x6f/0xb0 [ 47.156176] do_syscall_64+0x3b/0x90 [ 47.156642] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 47.157295] [ 47.157515] Freed by task 139: [ 47.157914] kasan_save_stack+0x1e/0x40 [ 47.158412] kasan_set_track+0x21/0x30 [ 47.158895] kasan_save_free_info+0x2a/0x50 [ 47.159435] __kasan_slab_free+0x106/0x190 [ 47.159960] kmem_cache_free+0xf7/0x610 [ 47.160452] rcu_core+0x7e2/0x2080 [ 47.160929] __do_softirq+0x1c3/0x8f5 [ 47.161429] [ 47.161652] Last potentially related work creation: [ 47.162257] kasan_save_stack+0x1e/0x40 [ 47.162773] __kasan_record_aux_stack+0x95/0xb0 [ 47.163377] call_rcu+0x6a/0xa30 [ 47.163827] kmem_cache_free+0xbd/0x610 [ 47.164340] rcu_core+0x7e2/0x2080 [ 47.164801] __do_softirq+0x1c3/0x8f5 [ 47.165315] [ 47.165537] The buggy address belongs to the object at ffff88800dde81b0 [ 47.165537] which belongs to the cache kmemleak_object of size 368 [ 47.167063] The buggy address is located 24 bytes inside of [ 47.167063] 368-byte region [ffff88800dde81b0, ffff88800dde8320) [ 47.168471] [ 47.168694] The buggy address belongs to the physical page: [ 47.169387] page:00000000a787f787 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffffea0000255c20 pfn:0xdde8 [ 47.170674] head:00000000a787f787 order:1 compound_mapcount:0 compound_pincount:0 [ 47.171603] flags: 0x100000000010200(slab|head|node=0|zone=1) [ 47.172353] raw: 0100000000010200 ffff888007c4f780 dead000000120011 ffff88800dde9290 [ 47.173335] raw: ffffea0000255c20 ffffea00003b6d20 00000001ffffffff 0000000000000000 [ 47.174278] page dumped because: kasan: bad access detected [ 47.174960] [ 47.175173] Memory state around the buggy address: [ 47.175752] ffff88800dde8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 47.176634] ffff88800dde8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 47.177518] >ffff88800dde8180: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 47.178372] ^ [ 47.179049] ffff88800dde8200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 47.179913] ffff88800dde8280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 47.180778] ================================================================== [ 47.181657] Disabling lock debugging due to kernel taint VM DIAGNOSIS: 11:28:07 Registers: info registers vcpu 0 RAX=ffffffff84279580 RBX=ffffffff85232980 RCX=ffffffff8425ad72 RDX=0000000000000000 RSI=0000000000000001 RDI=0000000000000000 RBP=0000000000000000 RSP=ffffffff85207e18 R8 =0000000000000001 R9 =ffff88806ce33b63 R10=ffffed100d9c676c R11=0000000000000001 R12=fffffbfff0a46530 R13=ffffffff85b08350 R14=0000000000000000 R15=dffffc0000000000 RIP=ffffffff8427958b RFL=00000206 [-----P-] CPL=0 II=0 A20=1 SMM=0 HLT=1 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 0000000000000000 00000000 00000000 GS =0000 ffff88806ce00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=000055a1230d8fc0 CR3=000000000d406000 CR4=00350ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=6576652d7372656b726f772d6c6c696b XMM02=00000000000000000000000000000000 XMM03=00000000000000000000000000000000 XMM04=00000000000000000000000000000014 XMM05=00000000000000000000000000000000 XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000 XMM08=616c702f736563697665642f7379732f XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000031 RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8 RSI=ffffffff823c0801 RDI=ffffffff8765c9e0 RBP=ffffffff8765c9a0 RSP=ffff88801bf47358 R8 =0000000000000001 R9 =000000000000000a R10=0000000000000031 R11=0000000000000001 R12=0000000000000031 R13=ffffffff8765c9a0 R14=0000000000000010 R15=ffffffff823c07f0 RIP=ffffffff823c0859 RFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 0000555556481400 00000000 00000000 GS =0000 ffff88806cf00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe000004a000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000048000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=000055a1230b4030 CR3=000000000f1e6000 CR4=00350ee0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=ffffffffffffff00ffffffffffff0000 XMM02=ffffff0f0e0d0c0b0a09080706050403 XMM03=696e656420737365636341002f737973 XMM04=4c414954494e495f4345535500373536 XMM05=6765723a6d726f6674616c703d534149 XMM06=006d726f6674616c703d4d4554535953 XMM07=2f6d726f6674616c702f736563697665 XMM08=3a56000a73253a51000a73253a47000a XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000